252777081 has 16 divisors (see below), whose sum is σ = 350328384. Its totient is φ = 161982144.

The previous prime is 252777073. The next prime is 252777149. The reversal of 252777081 is 180777252.

It is not a de Polignac number, because 252777081 - 2³ = 252777073 is a prime.

It is a super-2 number, since 2×252777081² = 127792505357761122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (252770081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4506 + ... + 22931.

It is an arithmetic number, because the mean of its divisors is an integer number (21895524).

Almost surely, 2^252777081 is an apocalyptic number.

It is an amenable number.

252777081 is a deficient number, since it is larger than the sum of its proper divisors (97551303).

252777081 is a wasteful number, since it uses less digits than its factorization.

252777081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27560.

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 252777081 is about 15898.9647776200. The cubic root of 252777081 is about 632.2845426316.

The spelling of 252777081 in words is "two hundred fifty-two million, seven hundred seventy-seven thousand, eighty-one".